Warringham, R., Hamilton, N. G., Silverwood, I. P., How, C., Webb, P. B., Tooze, R. P., Zhou, W., Frost, C. D., Parker, S. F. and Lennon, D. (2015) The application of inelastic neutron scattering to investigate a hydrogen pre-treatment stage of an iron Fischer–Tropsch catalyst. Applied Catalysis A: General, 489, pp. 209-217. (doi: 10.1016/j.apcata.2014.10.033)
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Abstract
The effect of a hydrogen pre-treatment step on an iron based Fischer–Tropsch catalyst applied to the CO hydrogenation reaction at 623 and 723 K has been investigated by inelastic neutron scattering (INS). The catalyst cannot support methane production over a 6 h period of reaction at 623 K but it is active at 723 K. The INS spectrum indicates the presence of a predominantly aliphatic hydrocarbonaceous overlayer for the post-reaction 623 K sample, whereas the spectrum for the 723 K sample is assigned to an overlayer comprising partially hydrogenated polycyclic aromatic compounds. The hydrocarbonaceous overlayer associated with the active phase of the catalyst is modified by the hydrogen pre-treatment step. The INS spectra are interpreted with reference to microreactor studies, powder X-ray diffraction, temperature-programmed oxidation and transmission electron microscopy. The hydrogen pre-treatment stage favours the formation of amorphous carbon and is deemed not to convey any advantage with respect to CO hydrogenation activity.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | How, Mr Colin and Hamilton, Mr Neil and Warringham, Mr Robbie and Silverwood, Dr Ian and Lennon, Professor David |
| Authors: | Warringham, R., Hamilton, N. G., Silverwood, I. P., How, C., Webb, P. B., Tooze, R. P., Zhou, W., Frost, C. D., Parker, S. F., and Lennon, D. |
| College/School: | College of Science and Engineering > School of Chemistry College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Applied Catalysis A: General |
| Publisher: | Elsevier BV |
| ISSN: | 0926-860X |
| ISSN (Online): | 1873-3875 |
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